NABARD Grade A study materials
NABARD Grade A study resources

NABARD Grade A cheat sheet

NABARD Grade A · Keep the key ideas within reach.

Quick reference

English Language

  • Subject-verb agreement: a phrase between subject and verb ("the list of items") does not change the verb number; the head noun governs.

  • "Neither...nor" and "either...or" take a verb agreeing with the nearer subject: "Neither the clerk nor the officers were present."

  • Collective nouns (committee, team, jury) take a singular verb when acting as one unit, plural when members act individually.

  • Spotting-error priority order: subject-verb agreement, tense consistency, preposition after verb (comprise of is wrong; comprise takes no of), parallelism in lists.

  • Cloze strategy: read the full passage first, then classify each blank by part of speech and tone before checking options; eliminate options that break collocation.

  • Reading comprehension: answers must be inferable from the passage; extreme words (always, never, only) in options usually mark wrong choices.

  • Para jumbles: find the opener (no pronoun or connector referring backward), then chain via pronouns, connectors (however, therefore), and repeated key nouns.

  • Idioms to know: 'to bite the bullet' = endure a hard situation; 'once in a blue moon' = very rarely; 'to bell the cat' = take the risky lead.

Quick reference

Quantitative Aptitude

  • Simple interest = P×R×T/100; Compound interest = P[(1+R/100)^T − 1]; for 2 years the CI−SI gap equals P(R/100)².

  • Successive percentage changes: net = a + b + ab/100 (use negative signs for decreases); two successive 10% rises give 21%.

  • Profit and loss: SP = CP(1 ± gain/100); if two articles are sold at the same price with equal % gain and % loss, there is always a net loss of (x²/100)%.

  • Time-speed-distance: convert km/h to m/s by multiplying by 5/18; a train of length L crossing a platform of length P takes (L+P)/speed seconds.

  • Boats: downstream speed = b + s, upstream = b − s; b = (D + U)/2, s = (D − U)/2.

  • Time and work: if A does work in a days and B in b days, together they take ab/(a+b) days; use LCM of days as total work units.

  • Mixtures: alligation rule - ratio of quantities = (mean − cheaper) : (dearer − mean), always keeping differences positive.

  • Permutation vs combination: arrangements use nPr = n!/(n−r)!; selections use nCr = n!/[r!(n−r)!]; nCr = nC(n−r).

  • Mensuration: volume of cylinder = πr²h; sphere = (4/3)πr³; cone = (1/3)πr²h; diagonal of a cuboid = √(l²+b²+h²).

Quick reference

Reasoning Ability

  • Syllogism: 'All A are B' + 'All B are C' gives 'All A are C'; 'Some A are B' cannot yield 'All A are B' - only conclusions true in every Venn arrangement follow.

  • Blood relations: draw a family tree with gender and generation markers; vertical line = parent-child, horizontal = spouse or sibling.

  • Direction sense: track net displacement with a coordinate grid; final distance uses Pythagoras when the path turns 90°.

  • Seating arrangement: fix the most constrained person first; for circular arrangements of n people, distinct arrangements = (n−1)!.

  • Coding-decoding: check letter-position shifts first (A=1...Z=26), then reversal, then alternating patterns before assuming word substitution.

  • Inequalities: chain only same-direction symbols; 'A > B ≥ C' implies A > C but not C > A; 'either-or' conclusions need complementary pairs.

  • Series completion: test differences, then ratios, then squares/cubes with constant offsets, then alternating two-series patterns.

  • Data sufficiency: stop as soon as the question is answerable; decide whether each statement alone suffices before combining.

Quick reference

General Awareness

  • RBI was established on 1 April 1935 under the RBI Act 1934, nationalised in 1949; its headquarters moved to Mumbai in 1937.

  • Monetary policy is set by the six-member Monetary Policy Committee; the inflation target is 4% CPI with a tolerance band of 2%–6%.

  • NABARD was set up in 1982 on the recommendation of the B. Sivaraman Committee to serve agriculture and rural credit.

  • Key institutions: SEBI (1988, statutory 1992) regulates securities; IRDAI (1999) insurance; PFRDA (2003, statutory 2013) pensions.

  • Priority sector lending target for banks is 40% of adjusted net bank credit, with 18% for agriculture and 7.5% for micro enterprises.

  • Schemes to recall: PM-KISAN (income support), PMFBY (crop insurance), KCC (Kisan Credit Card), MUDRA (micro units), e-NAM (mandi trade).

  • Basel III pillars: minimum capital, supervisory review, market discipline; CET1 minimum is 4.5% of risk-weighted assets.

  • Financial inclusion: PMJDY (bank accounts), Atal Pension Yojana, Stand-Up India; India's first payments bank licences were issued in 2015.

Quick reference

Computer Knowledge

  • Memory units: 1 byte = 8 bits; 1 KB = 1024 bytes; 1 MB = 1024 KB; 1 GB = 1024 MB; 1 TB = 1024 GB.

  • RAM is volatile and holds running programs; ROM is non-volatile and stores firmware such as BIOS.

  • OSI has seven layers: Physical, Data Link, Network, Transport, Session, Presentation, Application; TCP works at Transport, IP at Network.

  • IPv4 addresses are 32-bit; IPv6 addresses are 128-bit; HTTP uses port 80 by default, HTTPS port 443.

  • Keyboard shortcuts: Ctrl+C copy, Ctrl+X cut, Ctrl+V paste, Ctrl+Z undo, Ctrl+Y redo, Ctrl+P print, Alt+F4 close window.

  • Malware categories: virus (attaches to files), worm (self-replicates over networks), trojan (disguised as useful software), ransomware (encrypts data for payment).

  • Firewall filters traffic by rules; antivirus uses signature and heuristic detection; phishing is a social-engineering attack, not a technical exploit.

  • In MS Excel, $A$1 is an absolute reference, A1 relative, $A1 mixed; SUM, AVERAGE, IF, VLOOKUP are core functions.

Quick reference

Economic and Social Issues

  • GDP = C + I + G + (X − M); nominal GDP uses current prices, real GDP uses constant base-year prices.

  • Inflation measures: CPI tracks retail prices and is the RBI's target index; WPI tracks wholesale prices and excludes services.

  • Fiscal deficit = total expenditure − total receipts excluding borrowings; revenue deficit = revenue expenditure − revenue receipts.

  • Repo rate is the rate at which RBI lends to banks against securities; reverse repo absorbs liquidity; CRR and SLR are reserve requirements.

  • Unemployment types: structural (skill mismatch), cyclical (demand shortfall), frictional (transition), disguised (surplus labour in agriculture).

  • Balance of payments = current account + capital account + errors and omissions; a current account deficit must be financed by capital inflows.

  • Human development: HDI combines life expectancy, education (mean and expected years of schooling), and GNI per capita.

  • Poverty measurement in India has used the Tendulkar and Rangarajan committees; multidimensional poverty uses health, education, and living standards.

Quick reference

Agriculture and Rural Development

  • Kharif crops are sown with the monsoon (June–July: rice, maize, cotton, soybean); Rabi crops are sown in winter (wheat, mustard, gram).

  • Cropping intensity = (gross cropped area / net sown area) × 100; it exceeds 100% when land is cropped more than once a year.

  • Green Revolution centred on wheat and rice via HYV seeds, irrigation, and fertiliser; it was led in India by M. S. Swaminathan.

  • Soil health: legumes fix atmospheric nitrogen via Rhizobium; NPK denotes nitrogen, phosphorus, potassium.

  • Irrigation sources: canal, tank, well/tube-well; drip and sprinkler are micro-irrigation methods that raise water-use efficiency.

  • NABARD refinances rural credit and administers the Rural Infrastructure Development Fund; it is the apex body for rural development banking.

  • Minimum Support Price is recommended by the CACP and announced by the government; procurement is handled by agencies such as FCI and NAFED.

  • Animal husbandry and fisheries are allied activities; India is among the world's largest producers of milk and pulses.

Quick reference

Analytical Reasoning / Decision Making

  • Decision questions: pick the option that is legal, ethical, and proportionate; personal benefit or convenience never justifies bending rules.

  • Rank the options by priority: protect life and safety first, then institutional rules, then customer or public interest, then efficiency.

  • Escalation rule: when a matter exceeds your authority, report to the supervisor rather than acting unilaterally or ignoring it.

  • Analytical puzzles: convert statements into a table of fixed attributes; eliminate options that contradict any single constraint.

  • Cause-effect questions: the cause must precede the effect and be sufficient to explain it; correlation alone is not causation.

  • Assumption questions: the correct assumption is necessary for the argument; negate it and check whether the argument collapses.

  • Strengthen/weaken questions: an option that adds evidence for the conclusion strengthens; one that offers an alternative cause weakens.

  • Course of action: a valid action must be practical, within authority, and directly address the stated problem, not a related one.

Quick reference

English Descriptive Writing

  • Essay structure: introduction with context, 2–3 body paragraphs each with one argument plus evidence, and a conclusion that restates the position.

  • Letter format: sender address, date, receiver address, subject line, salutation, body, complimentary close; formal letters avoid contractions and slang.

  • Word limits are hard constraints: an essay of 250 words should land within roughly 230–270; exceeding the limit signals poor planning.

  • Precis: retain only the central idea and essential supporting points; target about one-third of the original length and never add opinion.

  • Report writing: use past tense, third person, and headings (what, when, where, who, outcome); avoid first-person narration.

  • Cohesion devices: use connectors (however, therefore, moreover) sparingly and correctly; overuse is a common scoring penalty.

  • Common scoring errors: subject-verb mismatch, tense shifts within a paragraph, and spelling of homophones (affect/effect, principal/principle).

  • For rural or economic topics, cite scheme names and one or two figures from memory only when confident; a wrong statistic costs more than a general statement.

Quick reference

English Language

  • Subject-verb agreement ignores intervening phrases: 'The list of items is on the desk.'

  • 'Neither...nor' takes the verb of the nearer subject: 'Neither the clerk nor the officers were present.'

  • Collective nouns are singular when acting as a unit, plural when members act separately.

  • Spotting-error order: agreement, tense consistency, verb-preposition collocation, parallelism.

  • Cloze: classify each blank by part of speech and tone before evaluating options.

  • Reading comprehension: extreme options (always, never, only) are usually wrong; answers must be inferable from the passage.

  • Para jumbles: locate the opener with no backward-referring pronoun or connector, then chain by pronouns and connectors.

  • Idioms: 'bite the bullet' = endure hardship; 'once in a blue moon' = very rarely; 'bell the cat' = take the risky lead.

Quick reference

Quantitative Aptitude

  • SI = P×R×T/100; CI = P[(1+R/100)^T − 1]; the 2-year CI−SI gap is P(R/100)².

  • Successive changes: net = a + b + ab/100; two 10% rises give 21%.

  • Selling two items at the same price with equal % gain and % loss always yields a net loss of (x²/100)%.

  • km/h to m/s: multiply by 5/18; train crossing a platform takes (L+P)/speed seconds.

  • Boats: b = (downstream + upstream)/2; s = (downstream − upstream)/2.

  • Work: A in a days and B in b days together take ab/(a+b) days; use LCM of days as total work.

  • Alligation ratio = (mean − cheaper) : (dearer − mean).

  • nPr = n!/(n−r)! for arrangements; nCr = n!/[r!(n−r)!] for selections.

  • Cylinder volume πr²h; sphere (4/3)πr³; cone (1/3)πr²h; cuboid diagonal √(l²+b²+h²).

Quick reference

Reasoning Ability

  • 'All A are B' plus 'All B are C' gives 'All A are C'; 'Some A are B' never yields 'All A are B'.

  • Blood relations: draw a tree with gender and generation markers; vertical = parent-child, horizontal = spouse or sibling.

  • Direction sense: track net displacement on a grid; a 90° turn makes final distance a Pythagoras calculation.

  • Circular arrangement of n people has (n−1)! distinct arrangements.

  • Coding-decoding: test letter-position shifts (A=1...Z=26), then reversal, then alternating patterns.

  • Inequalities: chain only same-direction symbols; 'A > B ≥ C' implies A > C, not C > A.

  • Series: test differences, then ratios, then squares/cubes with offsets, then alternating two-series patterns.

  • Data sufficiency: decide whether each statement alone suffices before combining them.

Quick reference

General Awareness

  • RBI established 1 April 1935 under the RBI Act 1934; nationalised 1949; headquarters moved to Mumbai in 1937.

  • Monetary Policy Committee has six members; inflation target is 4% CPI with a 2%–6% tolerance band.

  • NABARD was set up in 1982 on the B. Sivaraman Committee's recommendation.

  • SEBI became statutory in 1992; IRDAI (1999) regulates insurance; PFRDA (2013) regulates pensions.

  • Priority sector lending target: 40% of ANBC, with 18% for agriculture and 7.5% for micro enterprises.

  • PM-KISAN gives income support; PMFBY gives crop insurance; KCC gives crop credit; e-NAM is the electronic mandi network.

  • Basel III CET1 minimum is 4.5% of risk-weighted assets.

  • India's first payments bank licences were issued in 2015; PMJDY is the flagship financial inclusion account scheme.

Quick reference

Computer Knowledge

  • 1 byte = 8 bits; 1 KB = 1024 bytes; 1 MB = 1024 KB; 1 GB = 1024 MB.

  • RAM is volatile and holds running programs; ROM is non-volatile and stores firmware such as BIOS.

  • OSI layers: Physical, Data Link, Network, Transport, Session, Presentation, Application.

  • IPv4 is 32-bit, IPv6 is 128-bit; HTTP uses port 80, HTTPS port 443.

  • Shortcuts: Ctrl+C copy, Ctrl+X cut, Ctrl+V paste, Ctrl+Z undo, Ctrl+Y redo, Alt+F4 close.

  • Worm self-replicates across networks; trojan disguises as useful software; ransomware encrypts data for payment.

  • Firewalls filter traffic by rules; antivirus uses signature and heuristic detection; phishing is social engineering.

  • Excel: $A$1 absolute, A1 relative, $A1 mixed; SUM, AVERAGE, IF and VLOOKUP are core functions.

Quick reference

Economic and Social Issues

  • GDP = C + I + G + (X − M); nominal GDP uses current prices, real GDP constant base-year prices.

  • CPI tracks retail prices and is the RBI's target index; WPI tracks wholesale prices and excludes services.

  • Fiscal deficit = total expenditure − total receipts excluding borrowings.

  • Repo rate lends to banks against securities; reverse repo absorbs liquidity; CRR and SLR are reserve requirements.

  • Unemployment types: structural, cyclical, frictional, and disguised (surplus agricultural labour).

  • Balance of payments = current account + capital account + errors and omissions.

  • HDI combines life expectancy, mean and expected years of schooling, and GNI per capita.

  • India's poverty estimates have used the Tendulkar and Rangarajan committees; multidimensional poverty covers health, education and living standards.

Quick reference

Agriculture and Rural Development

  • Kharif crops are sown with the monsoon (rice, maize, cotton, soybean); Rabi crops are sown in winter (wheat, mustard, gram).

  • Cropping intensity = (gross cropped area / net sown area) × 100.

  • The Green Revolution used HYV seeds, irrigation and fertiliser, centred on wheat and rice.

  • Legumes fix atmospheric nitrogen via Rhizobium; NPK denotes nitrogen, phosphorus and potassium.

  • Drip and sprinkler irrigation raise water-use efficiency compared with flood irrigation.

  • NABARD refinances rural credit and administers the Rural Infrastructure Development Fund.

  • MSP is recommended by the CACP; procurement is handled by FCI and NAFED.

  • Animal husbandry and fisheries are allied activities; India is among the largest producers of milk and pulses.

Quick reference

Analytical Reasoning / Decision Making

  • Choose the option that is legal, ethical and proportionate; personal benefit never justifies bending rules.

  • Priority order: life and safety, then institutional rules, then public or customer interest, then efficiency.

  • Escalate matters beyond your authority to the supervisor rather than acting alone or ignoring them.

  • Analytical puzzles: build a table of fixed attributes and eliminate options contradicting any constraint.

  • Cause must precede effect and be sufficient to explain it; correlation is not causation.

  • Assumption questions: negate the assumption; if the argument collapses, the assumption is necessary.

  • An alternative cause weakens an argument; added supporting evidence strengthens it.

  • A valid course of action must be practical, within authority, and address the stated problem directly.

Quick reference

English Descriptive Writing

  • Essay: introduction with context, 2–3 body paragraphs each carrying one argument plus evidence, and a concluding position.

  • Formal letter: sender address, date, receiver address, subject, salutation, body, complimentary close; no contractions or slang.

  • A 250-word essay should land near 230–270 words; exceeding the limit signals poor planning.

  • Precis: keep only the central idea and essential points, about one-third of the original, with no added opinion.

  • Report writing uses past tense, third person, and headings covering what, when, where, who and outcome.

  • Connectors (however, therefore, moreover) should be used sparingly and correctly; overuse is penalised.

  • Frequent scoring errors: subject-verb mismatch, tense shifts within a paragraph, and homophones (affect/effect, principal/principle).

  • Cite a scheme name or figure only when confident; a wrong statistic costs more than a general statement.

Quick reference

English Language

  • Intervening phrases do not change subject-verb agreement: 'The list of items is on the desk.'

  • 'Neither...nor' and 'either...or' take the verb of the nearer subject.

  • Collective nouns take singular verbs as a unit, plural verbs when members act separately.

  • Spotting-error order: agreement, tense consistency, verb-preposition collocation, parallelism.

  • Cloze: identify each blank's part of speech and tone before checking options.

  • Comprehension: extreme options (always, never, only) are usually wrong.

  • Para jumbles: find the opener lacking backward-referring pronouns, then chain by pronouns and connectors.

  • Idioms: 'bite the bullet' = endure hardship; 'once in a blue moon' = very rarely.

Quick reference

Quantitative Aptitude

  • SI = PRT/100; CI = P[(1+R/100)^T − 1]; 2-year CI−SI gap = P(R/100)².

  • Successive percentage change: net = a + b + ab/100.

  • Equal % gain and % loss on two same-price sales gives a net loss of (x²/100)%.

  • km/h to m/s: multiply by 5/18.

  • Boats: b = (D + U)/2, s = (D − U)/2.

  • Work: A in a days, B in b days, together ab/(a+b) days.

  • Alligation: ratio = (mean − cheaper) : (dearer − mean).

  • nCr = n!/[r!(n−r)!]; nPr = n!/(n−r)!.

  • Cylinder πr²h; sphere (4/3)πr³; cone (1/3)πr²h.

Quick reference

Reasoning Ability

  • 'All A are B' + 'All B are C' implies 'All A are C'.

  • 'Some A are B' cannot support the conclusion 'All A are B'.

  • Blood relations: vertical line = parent-child, horizontal = spouse or sibling.

  • Direction sense: 90° turns make final displacement a Pythagoras problem.

  • Circular arrangements of n people: (n−1)! distinct orders.

  • Coding-decoding: test position shifts, reversal, then alternating patterns.

  • Inequalities: 'A > B ≥ C' implies A > C but not C > A.

  • Data sufficiency: test each statement alone before combining.

Quick reference

General Awareness

  • RBI: established 1 April 1935, nationalised 1949, headquarters in Mumbai since 1937.

  • Inflation target 4% CPI, tolerance band 2%–6%, set by the six-member MPC.

  • NABARD: 1982, on the B. Sivaraman Committee recommendation.

  • SEBI statutory 1992; IRDAI 1999; PFRDA statutory 2013.

  • Priority sector lending: 40% of ANBC, 18% agriculture, 7.5% micro enterprises.

  • PM-KISAN income support; PMFBY crop insurance; KCC crop credit; e-NAM electronic mandi.

  • Basel III CET1 minimum 4.5% of risk-weighted assets.

  • First payments bank licences issued in 2015; PMJDY is the flagship inclusion account.

Quick reference

Computer Knowledge

  • 1 byte = 8 bits; 1 KB = 1024 bytes; 1 MB = 1024 KB.

  • RAM volatile, holds running programs; ROM non-volatile, stores BIOS firmware.

  • OSI: Physical, Data Link, Network, Transport, Session, Presentation, Application.

  • IPv4 32-bit, IPv6 128-bit; HTTP port 80, HTTPS port 443.

  • Ctrl+Z undo, Ctrl+Y redo, Ctrl+P print, Alt+F4 close window.

  • Worm self-replicates; trojan disguises as useful software; ransomware encrypts data.

  • Phishing is social engineering, not a software exploit.

  • Excel: $A$1 absolute, A1 relative, $A1 mixed.

Quick reference

Economic and Social Issues

  • GDP = C + I + G + (X − M).

  • CPI is the RBI's target index; WPI excludes services.

  • Fiscal deficit = total expenditure − receipts excluding borrowings.

  • Repo lends against securities; reverse repo absorbs liquidity.

  • Disguised unemployment = surplus labour in agriculture.

  • BoP = current account + capital account + errors and omissions.

  • HDI: life expectancy, schooling years, GNI per capita.

  • Tendulkar and Rangarajan committees measured Indian poverty.

Quick reference

Agriculture and Rural Development

  • Kharif sown June–July (rice, cotton); Rabi sown in winter (wheat, mustard).

  • Cropping intensity = (gross cropped area / net sown area) × 100.

  • Green Revolution: HYV seeds, irrigation, fertiliser; wheat and rice.

  • Rhizobium in legumes fixes atmospheric nitrogen.

  • Drip and sprinkler irrigation improve water-use efficiency.

  • NABARD administers the Rural Infrastructure Development Fund.

  • MSP recommended by CACP; procurement by FCI and NAFED.

  • India is among the largest producers of milk and pulses.

Quick reference

Analytical Reasoning / Decision Making

  • Prefer the legal, ethical, proportionate option over the convenient one.

  • Protect life and safety first, then rules, then public interest.

  • Escalate beyond-authority matters to the supervisor.

  • Eliminate puzzle options that contradict any single constraint.

  • A cause must precede and sufficiently explain its effect.

  • Negate an assumption to test whether the argument collapses.

  • An alternative cause weakens an argument.

  • A valid course of action is practical and within authority.

Quick reference

English Descriptive Writing

  • Essay: context introduction, 2–3 argument paragraphs with evidence, concluding position.

  • Formal letter needs subject line and no contractions.

  • 250-word essay should land near 230–270 words.

  • Precis is about one-third of the original, with no added opinion.

  • Reports use past tense, third person and heading-based structure.

  • Use connectors sparingly; overuse is penalised.

  • Watch homophones: affect/effect, principal/principle.

  • Avoid uncertain statistics; a wrong figure costs more than a general statement.

Quick reference

English Language

  • Subject-verb agreement is governed by the head noun, not intervening phrases.

  • 'Neither...nor' takes the nearer subject's verb number.

  • Collective nouns: singular as a unit, plural when members act individually.

  • Spotting-error order: agreement, tense, collocation, parallelism.

  • Cloze: classify each blank by part of speech and tone first.

  • Comprehension: reject extreme options (always, never, only).

  • Para jumbles: opener has no backward-referring pronoun or connector.

  • Idioms: 'bite the bullet' = endure hardship; 'bell the cat' = take the risky lead.

Quick reference

Quantitative Aptitude

  • SI = PRT/100; CI = P[(1+R/100)^T − 1].

  • 2-year CI−SI difference = P(R/100)².

  • Successive change: net = a + b + ab/100.

  • Equal % gain and loss on same-price sales gives net loss (x²/100)%.

  • Train crossing platform: time = (L+P)/speed.

  • Boats: b = (D + U)/2, s = (D − U)/2.

  • Work: together ab/(a+b) days.

  • Alligation ratio = (mean − cheaper) : (dearer − mean).

  • nCr = n!/[r!(n−r)!]; nPr = n!/(n−r)!.

Quick reference

Reasoning Ability

  • 'All A are B' + 'All B are C' implies 'All A are C'.

  • 'Some A are B' cannot yield 'All A are B'.

  • Blood relations: vertical = parent-child, horizontal = spouse or sibling.

  • Direction sense: 90° turns require Pythagoras for final distance.

  • Circular arrangement of n people: (n−1)! orders.

  • Coding-decoding: test position shifts, then reversal.

  • Inequalities: 'A > B ≥ C' implies A > C, not C > A.

  • Data sufficiency: test each statement alone first.

Quick reference

General Awareness

  • RBI: 1 April 1935, nationalised 1949, Mumbai headquarters since 1937.

  • MPC: six members; inflation target 4% CPI, band 2%–6%.

  • NABARD: 1982, B. Sivaraman Committee.

  • SEBI statutory 1992; IRDAI 1999; PFRDA statutory 2013.

  • Priority sector: 40% of ANBC, 18% agriculture, 7.5% micro enterprises.

  • PMFBY = crop insurance; KCC = crop credit; e-NAM = electronic mandi.

  • Basel III CET1 minimum 4.5%.

  • First payments bank licences issued in 2015.

Quick reference

Computer Knowledge

  • 1 byte = 8 bits; 1 KB = 1024 bytes; 1 MB = 1024 KB.

  • RAM volatile; ROM non-volatile, stores BIOS.

  • OSI has seven layers from Physical to Application.

  • IPv4 32-bit; IPv6 128-bit; HTTP port 80, HTTPS 443.

  • Ctrl+Z undo; Ctrl+Y redo; Alt+F4 closes the window.

  • Worm self-replicates; trojan disguises; ransomware encrypts.

  • Phishing is social engineering, not code exploitation.

  • Excel: $A$1 absolute, A1 relative, $A1 mixed.

Quick reference

Economic and Social Issues

  • GDP = C + I + G + (X − M).

  • CPI is the RBI's target index; WPI excludes services.

  • Fiscal deficit = expenditure − receipts excluding borrowings.

  • Repo lends against securities; reverse repo absorbs liquidity.

  • Disguised unemployment = surplus agricultural labour.

  • BoP = current + capital account + errors and omissions.

  • HDI: life expectancy, schooling, GNI per capita.

  • Tendulkar and Rangarajan committees measured poverty.

Quick reference

Agriculture and Rural Development

  • Kharif sown June–July (rice, cotton); Rabi sown in winter (wheat, mustard).

  • Cropping intensity = (gross cropped area / net sown area) × 100.

  • Green Revolution: HYV seeds, irrigation, fertiliser, wheat and rice.

  • Rhizobium in legumes fixes atmospheric nitrogen.

  • Drip and sprinkler irrigation improve water-use efficiency.

  • NABARD administers the Rural Infrastructure Development Fund.

  • MSP recommended by CACP; procurement by FCI and NAFED.

  • India is among the largest producers of milk and pulses.

Quick reference

Analytical Reasoning / Decision Making

  • Prefer the legal, ethical, proportionate option over the convenient one.

  • Protect life and safety first, then rules, then public interest.

  • Escalate beyond-authority matters to the supervisor.

  • Eliminate puzzle options contradicting any single constraint.

  • A cause must precede and sufficiently explain its effect.

  • Negate an assumption to test whether the argument collapses.

  • An alternative cause weakens an argument.

  • A valid course of action is practical and within authority.

Quick reference

English Descriptive Writing

  • Essay: context introduction, 2–3 argument paragraphs with evidence, concluding position.

  • Formal letter requires a subject line and no contractions.

  • A 250-word essay should land near 230–270 words.

  • Precis is about one-third of the original with no added opinion.

  • Reports use past tense, third person and headings.

  • Use connectors sparingly; overuse is penalised.

  • Watch homophones: affect/effect, principal/principle.

  • Avoid uncertain statistics; a wrong figure costs more than a general statement.